| Name | NativeName | CountryId | Website |
|---|---|---|---|
| Transport Canada Civil Aviation Directorate (Transport Canada Civil Aviation) | Transports Canada Direction générale de l’aviation civile | Canada | https://www.tc.gc.ca/eng/civilaviation/menu.htm |
| Trinidad and Tobago Civil Aviation Authority | Trinidad and Tobago | https://www.caa.gov.tt | |
| Turks and Caicos Islands Civil Aviation Authority | Turks and Caicos Islands | https://tcicaa.org |